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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: AllFunction.html 671 2015-01-17 15:50:55Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.parse.func;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import org.jsimpledb.JClass;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import org.jsimpledb.JTransaction;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import org.jsimpledb.core.UnknownTypeException;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.jsimpledb.parse.ObjTypeParser;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.parse.ParseContext;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.jsimpledb.parse.ParseException;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.jsimpledb.parse.ParseSession;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.jsimpledb.parse.expr.AbstractValue;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.jsimpledb.parse.expr.EvalException;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.jsimpledb.parse.expr.ExprParser;<a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.jsimpledb.parse.expr.IdentNode;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import org.jsimpledb.parse.expr.Node;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.jsimpledb.parse.expr.Value;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>@Function<a name="line.24"></a>
<span class="sourceLineNo">025</span>public class AllFunction extends AbstractFunction {<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>    public AllFunction() {<a name="line.27"></a>
<span class="sourceLineNo">028</span>        super("all");<a name="line.28"></a>
<span class="sourceLineNo">029</span>    }<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span>    @Override<a name="line.31"></a>
<span class="sourceLineNo">032</span>    public String getHelpSummary() {<a name="line.32"></a>
<span class="sourceLineNo">033</span>        return "get all objects of a specified type";<a name="line.33"></a>
<span class="sourceLineNo">034</span>    }<a name="line.34"></a>
<span class="sourceLineNo">035</span><a name="line.35"></a>
<span class="sourceLineNo">036</span>    @Override<a name="line.36"></a>
<span class="sourceLineNo">037</span>    public String getUsage() {<a name="line.37"></a>
<span class="sourceLineNo">038</span>        return "all([type])";<a name="line.38"></a>
<span class="sourceLineNo">039</span>    }<a name="line.39"></a>
<span class="sourceLineNo">040</span><a name="line.40"></a>
<span class="sourceLineNo">041</span>    @Override<a name="line.41"></a>
<span class="sourceLineNo">042</span>    public String getHelpDetail() {<a name="line.42"></a>
<span class="sourceLineNo">043</span>        return "Retrieves all instances of the specified type, or all database objects if no type is given. The type may either"<a name="line.43"></a>
<span class="sourceLineNo">044</span>          + " be the name of a JSimpleDB Java model type (as an identifier) or any expression which evaluates to a java.lang.Class"<a name="line.44"></a>
<span class="sourceLineNo">045</span>          + " object (when not in core database mode) or an integer storage ID.";<a name="line.45"></a>
<span class="sourceLineNo">046</span>    }<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>    @Override<a name="line.48"></a>
<span class="sourceLineNo">049</span>    public Object parseParams(ParseSession session, ParseContext ctx, boolean complete) {<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>        // Verify parameter exists<a name="line.51"></a>
<span class="sourceLineNo">052</span>        if (ctx.tryLiteral(")"))<a name="line.52"></a>
<span class="sourceLineNo">053</span>            return null;<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>        // Special handling for tab-completion support for type names<a name="line.55"></a>
<span class="sourceLineNo">056</span>        if (complete &amp;&amp; (ctx.isEOF() || IdentNode.NAME_PATTERN.matcher(ctx.getInput()).matches())) {<a name="line.56"></a>
<span class="sourceLineNo">057</span>            new ObjTypeParser().parse(session, ctx, complete);<a name="line.57"></a>
<span class="sourceLineNo">058</span>            throw new ParseException(ctx, "expected `)'").addCompletion(") ");<a name="line.58"></a>
<span class="sourceLineNo">059</span>        }<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span>        // Parse expression<a name="line.61"></a>
<span class="sourceLineNo">062</span>        final int startingMark = ctx.getIndex();<a name="line.62"></a>
<span class="sourceLineNo">063</span>        final Node node = ExprParser.INSTANCE.parse(session, ctx, complete);<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>        // If expression is a single identifier, re-parse it as an object type name, otherwise it's a class or int expression<a name="line.65"></a>
<span class="sourceLineNo">066</span>        final Object result;<a name="line.66"></a>
<span class="sourceLineNo">067</span>        if (node instanceof IdentNode) {<a name="line.67"></a>
<span class="sourceLineNo">068</span>            ctx.setIndex(startingMark);<a name="line.68"></a>
<span class="sourceLineNo">069</span>            result = new ObjTypeParser().parse(session, ctx, complete).getStorageId();<a name="line.69"></a>
<span class="sourceLineNo">070</span>        } else<a name="line.70"></a>
<span class="sourceLineNo">071</span>            result = node;<a name="line.71"></a>
<span class="sourceLineNo">072</span><a name="line.72"></a>
<span class="sourceLineNo">073</span>        // Finish parse<a name="line.73"></a>
<span class="sourceLineNo">074</span>        ctx.skipWhitespace();<a name="line.74"></a>
<span class="sourceLineNo">075</span>        if (!ctx.tryLiteral(")"))<a name="line.75"></a>
<span class="sourceLineNo">076</span>            throw new ParseException(ctx, "expected `)'").addCompletion(") ");<a name="line.76"></a>
<span class="sourceLineNo">077</span><a name="line.77"></a>
<span class="sourceLineNo">078</span>        // Done<a name="line.78"></a>
<span class="sourceLineNo">079</span>        return result;<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    @Override<a name="line.82"></a>
<span class="sourceLineNo">083</span>    public Value apply(ParseSession session, Object param) {<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>        // Handle null<a name="line.85"></a>
<span class="sourceLineNo">086</span>        if (param == null) {<a name="line.86"></a>
<span class="sourceLineNo">087</span>            return new AbstractValue() {<a name="line.87"></a>
<span class="sourceLineNo">088</span>                @Override<a name="line.88"></a>
<span class="sourceLineNo">089</span>                public Object get(ParseSession session) {<a name="line.89"></a>
<span class="sourceLineNo">090</span>                    return session.hasJSimpleDB() ?<a name="line.90"></a>
<span class="sourceLineNo">091</span>                      JTransaction.getCurrent().getAll(Object.class) : session.getTransaction().getAll();<a name="line.91"></a>
<span class="sourceLineNo">092</span>                }<a name="line.92"></a>
<span class="sourceLineNo">093</span>            };<a name="line.93"></a>
<span class="sourceLineNo">094</span>        }<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>        // Handle storage ID<a name="line.96"></a>
<span class="sourceLineNo">097</span>        if (param instanceof Integer)<a name="line.97"></a>
<span class="sourceLineNo">098</span>            return this.getAll(session, (Integer)param);<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span>        // Handle expression<a name="line.100"></a>
<span class="sourceLineNo">101</span>        if (param instanceof Node) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>            final Object obj = ((Node)param).evaluate(session).checkNotNull(session, "all()");<a name="line.102"></a>
<span class="sourceLineNo">103</span>            if (obj instanceof Number)<a name="line.103"></a>
<span class="sourceLineNo">104</span>                return this.getAll(session, ((Number)obj).intValue());<a name="line.104"></a>
<span class="sourceLineNo">105</span>            if (obj instanceof Class &amp;&amp; session.hasJSimpleDB()) {<a name="line.105"></a>
<span class="sourceLineNo">106</span>                return new AbstractValue() {<a name="line.106"></a>
<span class="sourceLineNo">107</span>                    @Override<a name="line.107"></a>
<span class="sourceLineNo">108</span>                    public Object get(ParseSession session) {<a name="line.108"></a>
<span class="sourceLineNo">109</span>                        return JTransaction.getCurrent().getAll((Class&lt;?&gt;)obj);<a name="line.109"></a>
<span class="sourceLineNo">110</span>                    }<a name="line.110"></a>
<span class="sourceLineNo">111</span>                };<a name="line.111"></a>
<span class="sourceLineNo">112</span>            }<a name="line.112"></a>
<span class="sourceLineNo">113</span>            throw new EvalException("invalid object type expression with value of type " + obj.getClass().getName());<a name="line.113"></a>
<span class="sourceLineNo">114</span>        }<a name="line.114"></a>
<span class="sourceLineNo">115</span><a name="line.115"></a>
<span class="sourceLineNo">116</span>        // Oops<a name="line.116"></a>
<span class="sourceLineNo">117</span>        throw new RuntimeException("internal error");<a name="line.117"></a>
<span class="sourceLineNo">118</span>    }<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span>    private Value getAll(ParseSession session, final int storageId) {<a name="line.120"></a>
<span class="sourceLineNo">121</span><a name="line.121"></a>
<span class="sourceLineNo">122</span>        // Handle core-only case<a name="line.122"></a>
<span class="sourceLineNo">123</span>        if (!session.hasJSimpleDB()) {<a name="line.123"></a>
<span class="sourceLineNo">124</span>            return new AbstractValue() {<a name="line.124"></a>
<span class="sourceLineNo">125</span>                @Override<a name="line.125"></a>
<span class="sourceLineNo">126</span>                public Object get(ParseSession session) {<a name="line.126"></a>
<span class="sourceLineNo">127</span>                    try {<a name="line.127"></a>
<span class="sourceLineNo">128</span>                        return session.getTransaction().getAll(storageId);<a name="line.128"></a>
<span class="sourceLineNo">129</span>                    } catch (IllegalArgumentException e) {<a name="line.129"></a>
<span class="sourceLineNo">130</span>                        throw new EvalException(e.getMessage());<a name="line.130"></a>
<span class="sourceLineNo">131</span>                    }<a name="line.131"></a>
<span class="sourceLineNo">132</span>                }<a name="line.132"></a>
<span class="sourceLineNo">133</span>            };<a name="line.133"></a>
<span class="sourceLineNo">134</span>        }<a name="line.134"></a>
<span class="sourceLineNo">135</span><a name="line.135"></a>
<span class="sourceLineNo">136</span>        // Handle JSimpleDB case<a name="line.136"></a>
<span class="sourceLineNo">137</span>        final JClass&lt;?&gt; jclass;<a name="line.137"></a>
<span class="sourceLineNo">138</span>        try {<a name="line.138"></a>
<span class="sourceLineNo">139</span>            jclass = JTransaction.getCurrent().getJSimpleDB().getJClass(storageId);<a name="line.139"></a>
<span class="sourceLineNo">140</span>        } catch (UnknownTypeException e) {<a name="line.140"></a>
<span class="sourceLineNo">141</span>            throw new EvalException(e.getMessage(), e);<a name="line.141"></a>
<span class="sourceLineNo">142</span>        }<a name="line.142"></a>
<span class="sourceLineNo">143</span>        return new AbstractValue() {<a name="line.143"></a>
<span class="sourceLineNo">144</span>            @Override<a name="line.144"></a>
<span class="sourceLineNo">145</span>            public Object get(ParseSession session) {<a name="line.145"></a>
<span class="sourceLineNo">146</span>                return JTransaction.getCurrent().getAll(jclass.getType());<a name="line.146"></a>
<span class="sourceLineNo">147</span>            }<a name="line.147"></a>
<span class="sourceLineNo">148</span>        };<a name="line.148"></a>
<span class="sourceLineNo">149</span>    }<a name="line.149"></a>
<span class="sourceLineNo">150</span>}<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>




























































</pre>
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